Anti-frosting control method, device and equipment of cooling system and vehicle

Abstract

This application proposes a method, apparatus, equipment, and vehicle for preventing frost formation in a cooling system. The method is applied to a vehicle, where the cooling system includes an evaporator and cooling components. The method includes: detecting whether there is a risk of frost formation in the cooling system based on the vehicle's environmental parameters and the cooling system's operating parameters; if there is a risk of frost formation, determining the required parameters for the cooling components based on the real-time difference between the actual temperature and the target temperature of the evaporator; and controlling the cooling components according to these required parameters. This application can dynamically adjust the operating state of the cooling components, effectively suppressing frost formation without causing additional unpleasant user experiences, achieving a balanced state that can be maintained long-term, and avoiding frequent adjustments that could affect the overall vehicle's NVH performance.

Description

Technical Field

[0001] This application relates to the field of cooling system control technology, specifically to a method, device, equipment, and vehicle for preventing frost formation in a cooling system. Background Technology

[0002] In the cooling systems of new energy vehicles, the air conditioning cooling system plays a crucial role in ensuring the comfort of passengers, while the battery cooling system plays a key role in cooling the power battery and ensuring its optimal condition. New energy vehicle cooling systems face unique challenges under low-load cooling conditions: there is an imbalance between cooling supply and demand, with a significant oversupply of cooling. Excessive cooling causes the evaporator to continuously cool down. When the evaporator surface temperature drops to a certain level, approaching the frost point of moisture in the air, frost will form on the evaporator, thus reducing the overall performance of the cooling system.

[0003] In existing technologies, the evaporator frosting problem is typically solved by using an on / off throttling valve. The specific working principle is that when the actual temperature of the evaporator drops to near the frosting point of moisture in the air, the throttling valve automatically closes, preventing refrigerant from flowing through and slowing the evaporator's cooling rate to avoid further frosting. When the actual temperature of the evaporator rises above the frosting point of moisture in the air, the throttling valve reopens, allowing refrigerant to flow normally and restoring the cooling system's normal refrigeration function.

[0004] However, this control strategy of frequently switching the throttle body has obvious drawbacks. From the perspective of driving comfort, frequent switching of the valve body will cause the vehicle's air outlet temperature to become unstable, resulting in significant temperature fluctuations inside the vehicle. This will cause additional discomfort for passengers, especially during long drives, where this temperature instability can lead to irritability and discomfort. From the perspective of overall vehicle performance, the valve body generates refrigerant impact noise during the switching process. This impact noise not only directly increases the noise level inside the vehicle but may also trigger a series of vibration problems, negatively impacting the vehicle's noise, vibration, and harshness (NVH) performance. Consequently, it will significantly reduce the overall quality of the vehicle and user satisfaction. Summary of the Invention

[0005] In view of the above, it is necessary to propose a method, device, equipment and vehicle for preventing frost formation in a cooling system, so as to solve the technical problems that the current methods of solving the evaporator frost problem bring additional unpleasant perceptions to the occupants of the vehicle and reduce the overall NVH performance of the vehicle.

[0006] In a first aspect, this application provides a method for preventing frost formation in a cooling system, applied to a vehicle. The cooling system includes an evaporator and a cooling component. The method includes: detecting whether there is a risk of frost formation in the cooling system based on environmental parameters of the vehicle and operating parameters of the cooling system; if there is a risk of frost formation in the cooling system, determining the required parameters of the cooling component based on the real-time difference between the actual temperature and the target temperature of the evaporator; and controlling the cooling component based on the required parameters of the cooling component.

[0007] In the anti-frost control method of the cooling system described in the above embodiment, the first step is to detect whether there is a risk of frost formation in the cooling system based on the vehicle's environmental parameters and the cooling system's operating parameters. If there is a risk of frost formation, the required parameters of the cooling components are determined based on the real-time difference between the actual temperature and the target temperature of the evaporator. Then, the cooling components are controlled according to these required parameters. Based on this, by real-time detection of the vehicle's environmental parameters and the cooling system's operating parameters, this application can accurately determine whether the cooling system faces a risk of frost formation. This allows the application to anticipate frost formation rather than taking measures after it occurs, thus preventing frost formation from the outset and ensuring the continuous and stable operation of the cooling system. By comprehensively considering multiple parameters rather than a single parameter, the accuracy of frost risk assessment is improved, and misjudgments are reduced. When a risk of frost formation is determined, the required parameters of the cooling components are determined based on the real-time difference between the actual temperature and the target temperature of the evaporator. This allows for precise and dynamic adjustment of the cooling components' operating status based on the current temperature deviation of the evaporator, enabling the actual evaporator temperature to quickly and stably approach the target temperature, controlling the heat dissipation to achieve a supply-demand balance, effectively suppressing frost formation. The adjustment process is smooth and does not cause additional user discomfort. Because the calculation is based on real-time differential values, the cooling component's required parameters adaptively adjust to changes in the actual evaporator temperature, rather than using a fixed control strategy. This allows for better adaptation to different operating conditions and environmental changes, achieving a balanced state that can be maintained long-term. It maintains good anti-frost performance and avoids frequent adjustments that could negatively impact the vehicle's NVH performance. Precise control of the cooling components ensures the cooling system is always in a relatively ideal operating state, preventing problems such as decreased cooling efficiency and increased energy consumption caused by frost. For example, frost affects the evaporator's heat exchange efficiency, leading to insufficient cooling capacity. It also reduces damage to cooling system components caused by frost, such as corrosion from melting frost droplets and additional wear caused by frost, thereby extending the lifespan of cooling system components and reducing maintenance costs. For the vehicle's cooling system, stable cooling provides a comfortable riding environment for passengers, preventing unstable cooling and sudden temperature fluctuations caused by frost.

[0008] In some embodiments of this application, the cooling assembly includes a compressor, and the required parameters of the cooling assembly include the compressor speed. Determining the required parameters of the cooling assembly based on the real-time difference between the actual temperature and the target temperature of the evaporator includes: if the real-time difference is greater than a first preset temperature difference, determining that the compressor speed is increased; if the real-time difference is within a preset temperature difference range, determining that the compressor maintains its current speed, wherein the preset temperature difference range is greater than or equal to a second preset temperature difference and less than or equal to the first preset temperature difference; and if the real-time difference is less than the second preset temperature difference, determining that the compressor speed is decreased.

[0009] In some embodiments of this application, the cooling component further includes a fan, and the required parameters of the cooling component further include the fan speed. The step of determining the required parameters of the cooling component based on the real-time difference between the actual temperature and the target temperature of the evaporator further includes: if the compressor continuously reduces its speed until it reaches the minimum speed, and the real-time difference is still not within the preset temperature difference range, then the fan speed is determined to be reduced by a first preset value.

[0010] In some embodiments of this application, determining the required parameters of the cooling component based on the real-time difference between the actual temperature and the target temperature of the evaporator further includes: if the fan speed is reduced by the first preset value and the real-time difference is still not within the preset temperature difference range after a preset time interval, determining that the fan speed is reduced by the first preset value again.

[0011] In some embodiments of this application, determining the required parameters of the cooling component based on the real-time difference between the actual temperature and the target temperature of the evaporator further includes: if the real-time difference is within the preset temperature difference range, determining that the fan maintains its current speed.

[0012] In some embodiments of this application, the cooling assembly further includes an active air intake grille, and the required parameters of the cooling assembly further include the opening degree of the active air intake grille; the step of determining the required parameters of the cooling assembly based on the real-time difference between the actual temperature and the target temperature of the evaporator further includes: if the fan speed continues to decrease until it decreases to zero, and the real-time difference is still not within the preset temperature difference range, then the opening degree of the active air intake grille is determined to be reduced by a second preset value.

[0013] In some embodiments of this application, determining the required parameters of the cooling component based on the real-time difference between the actual temperature and the target temperature of the evaporator further includes: if the real-time difference is still not within the preset temperature difference range after the opening of the active air intake grille is reduced by the second preset value, determining that the opening of the active air intake grille is reduced by the second preset value again.

[0014] In some embodiments of this application, determining the required parameters of the cooling component based on the real-time difference between the actual temperature and the target temperature of the evaporator further includes: if the real-time difference is within the preset temperature difference range, determining that the active air intake grille maintains its current opening.

[0015] Secondly, this application also provides an anti-frost control device for a cooling system, applied to a vehicle's cooling system, the cooling system including an evaporator and a cooling component, the device comprising: a detection module, used to detect whether there is a risk of frost formation in the cooling system based on the vehicle's environmental parameters and the operating parameters of the cooling system; a determination module, used to determine the required parameters of the cooling component based on the real-time difference between the actual temperature and the target temperature of the evaporator if there is a risk of frost formation in the cooling system; and a control module, used to control the cooling component according to the required parameters of the cooling component.

[0016] Thirdly, this application also provides an electronic device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the computer program is executed by the processor, it implements the steps of the anti-frost control method for the cooling system described in the above embodiments.

[0017] Fourthly, this application also provides a vehicle that includes the electronic equipment described in the above embodiments.

[0018] Understandably, the anti-frost control device of the cooling system in the second aspect, the electronic equipment in the third aspect, and the vehicle in the fourth aspect all correspond to the anti-frost control method of the cooling system in the first aspect. Therefore, the beneficial effects they can achieve can be referred to the beneficial effects in the corresponding anti-frost control method of the cooling system provided above, and will not be repeated here. Attached Figure Description

[0019] Figure 1 This is an application scenario diagram of the anti-frost control method for a cooling system provided in an embodiment of this application.

[0020] Figure 2 This is a schematic flowchart of an anti-frost control method for a cooling system provided in an embodiment of this application.

[0021] Figure 3 This is a detailed flowchart illustrating an anti-frost control method for a cooling system provided in an embodiment of this application.

[0022] Figure 4 This is a schematic diagram of the functional modules of the anti-frost control device of the cooling system provided in an embodiment of this application.

[0023] Figure 5This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application.

[0024] Component Symbol Explanation

[0025] Vehicle 1

[0026] Electronic devices 10

[0027] Memory 11

[0028] Processor 12

[0029] Cooling system anti-frost control device 100

[0030] Detection module 110

[0031] Determine module 120

[0032] Control Module 130

[0033] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this application. Detailed Implementation

[0034] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0035] In the embodiments of this application, it should be noted that, unless otherwise expressly specified and limited, the word "for example" is used to indicate an example, illustration, or description. Any embodiment or design scheme described as "for example" in the embodiments of this application should not be construed as being better or more advantageous than other embodiments or design schemes. Specifically, the use of the word "for example" is intended to present the relevant concepts in a specific manner.

[0036] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0037] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined as "first" or "second" may explicitly or implicitly include one or more features. Furthermore, in the description of this application, "multiple" means two or more, unless otherwise expressly and specifically limited.

[0038] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0039] Please see Figure 1 This is a schematic diagram illustrating an application scenario of the anti-frost control method for a cooling system provided in an embodiment of this application.

[0040] Specifically, the cooling system is a dual heat exchange system consisting of an air conditioning cooling system and a battery cooling system. The cooling system may include, but is not limited to, components such as an air conditioner, condenser, evaporator, high-voltage battery cooling heat exchanger, thermal expansion valve, and cooling components. Cooling components include a compressor, fan, and active grille system (AGS). The condenser, compressor, and high-voltage battery cooling heat exchanger are connected via refrigerant piping.

[0041] The air conditioner is used to cool the passenger compartment of vehicle 1, the high-voltage battery cooling heat exchanger is used to cool the power battery of vehicle 1, the air intake of the condenser can be controlled by adjusting the opening of the active air intake grille, and the air intake of the condenser can be adjusted by adjusting the speed of the fan.

[0042] In some embodiments of this application, the cooling system also includes components such as an air conditioning heat exchanger (Evap_1), an air conditioning blower (Blow_1), an air conditioning electromagnetic thermal expansion valve (ETXV_1), a high-voltage battery cooling heat exchanger electromagnetic thermal expansion valve (ETXV_2), and a coaxial tube, which together form a dual evaporative heat exchange system.

[0043] The cooling system in the above embodiments can achieve the following operating modes: single-operation mode of air conditioning, single-operation mode of high-voltage battery cooling heat exchanger, and dual-operation mode of air conditioning and high-voltage battery cooling heat exchanger. This can achieve the function of cooling the passenger compartment of vehicle 1 and cooling the power battery of vehicle 1, ensuring the comfort of the passenger compartment while meeting the cooling requirements of the power battery.

[0044] In some embodiments of this application, the cooling system further includes a pressure sensor (P) and multiple temperature sensors (T). The pressure sensor is located at the compressor outlet and monitors the refrigerant pressure at various stages of the refrigeration cycle. For example, at the compressor outlet, the pressure sensor can monitor the high-pressure state of the refrigerant after compression, while at the evaporator inlet, it can detect the low-pressure state of the refrigerant after throttling and pressure reduction. These pressure data provide a comprehensive understanding of the pressure distribution of the cooling system, thereby determining whether the cooling system is operating normally. Temperature sensors are located on the evaporator surface and at the condenser outlet to monitor the actual temperature of key components such as the evaporator and condenser. The temperature sensor at the evaporator monitors the temperature of the refrigerant during evaporation and heat absorption, which is closely related to the cooling effect of the cooling zone system. The temperature sensor at the condenser monitors the temperature of the refrigerant after heat dissipation, reflecting the heat dissipation situation and providing a basis for temperature control of the cooling system.

[0045] Please see Figure 2 This is a schematic diagram of the steps of an anti-frost control method for a cooling system provided in an embodiment of this application.

[0046] This application provides a method for preventing frost formation in a cooling system, which can be applied to one or more electronic devices 10. The electronic device 10 is a device that can automatically perform numerical calculations and / or information processing according to pre-set or stored instructions. Its hardware includes, but is not limited to, microprocessors, application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), digital signal processors (DSPs), embedded devices, etc.

[0047] In some embodiments of this application, the electronic device 10 can be communicatively connected to devices such as desktop computers, laptops, handheld computers, and cloud servers.

[0048] In some embodiments of this application, the electronic device 10 can interact with the user via a keyboard, mouse, remote control, touchpad, or voice control device.

[0049] In some embodiments of this application, the electronic device 10 may further include network devices and / or client devices. These network devices include, but are not limited to, a single network server, a server group consisting of multiple network servers, and a cloud server based on cloud computing, consisting of a large number of hosts or network servers.

[0050] In some embodiments of this application, the network where the electronic device 10 is located includes, but is not limited to, the Internet, wide area network, metropolitan area network, local area network, virtual private network (VPN), etc.

[0051] In some embodiments of this application, a vehicle 1 is also provided, which includes an electronic device 10. The electronic device 10 may be an on-board device of the vehicle 1, such as a Body Control Module (BCM) or a Vehicle Control Unit (VCU).

[0052] Specifically, the anti-frost control method for the cooling system includes the following steps. Depending on different needs, the order of some steps in the flowchart can be changed, and some steps can be omitted.

[0053] Step S10: Detect whether there is a risk of frost formation in the cooling system based on the vehicle's environmental parameters and the operating parameters of the cooling system.

[0054] In some embodiments of this application, environmental parameters include, but are not limited to, the current ambient temperature and lighting conditions of vehicle 1.

[0055] In some embodiments of this application, the operating parameters of the cooling system include, but are not limited to, the heat exchange rate on the condenser side and the heat load on the evaporator side.

[0056] In some embodiments of this application, when vehicle 1 is in a low ambient temperature and low load state, the heat load in the passenger compartment is small, and the air conditioning at level 1 or 2 is sufficient to meet the temperature requirements of the passenger compartment. At the same time, the power battery can also be quickly cooled to a reasonable cooling temperature range. At this time, the heat exchange on the condenser side is greater than the heat load on the evaporator side, resulting in a supply of cooling capacity exceeding demand. The actual temperature of the evaporator continues to decrease, leading to frost formation. The refrigerant does not evaporate in the evaporator, which will cause liquid return, thereby damaging the mechanical performance of the compressor and causing a failure of the cooling system. Based on this, when the current ambient temperature of vehicle 1 is less than or equal to a preset temperature, such as 25°C, and the lighting conditions are no light, and the heat exchange on the condenser side is greater than the heat load on the evaporator side, it can be determined that there is a risk of frost formation in the cooling system.

[0057] In some embodiments of this application, if there is no risk of frost formation in the cooling system, the electronic device 10 returns to step S10.

[0058] In some embodiments of this application, if there is a risk of frost formation in the cooling system, the electronic device 10 performs step S11.

[0059] Step S11: Determine the required parameters of the cooling components based on the real-time difference between the actual temperature of the evaporator and the target temperature.

[0060] In some embodiments of this application, the cooling assembly includes a compressor, a fan, and an active air intake grille. The compressor's required parameters may include its rotational speed.

[0061] In some embodiments of this application, the electronic device 10 can monitor the actual temperature of the evaporator through a temperature sensor on the surface of the evaporator, and then determine the real-time difference between the actual temperature and the target temperature.

[0062] In some embodiments of this application, in new energy vehicles, the air conditioning cooling system and battery cooling system typically need to comprehensively consider the needs of the passenger compartment and the battery. The target temperature can be a comprehensive value that needs to be dynamically adjusted according to the actual needs of the passenger compartment and the battery. For example, when the battery's required temperature is high, priority is given to meeting the battery's cooling needs. In this case, the target temperature is adjusted based primarily on the required temperature of the power battery, with the passenger compartment's required temperature as a secondary consideration. Conversely, when the passenger compartment temperature is high, priority is given to meeting the passenger compartment's cooling needs. In this case, the target temperature is adjusted primarily on the required temperature of the passenger compartment, with the power battery's required temperature as a secondary consideration.

[0063] The required temperature for the passenger compartment is set based on passenger comfort needs. Typically, this temperature can be adjusted via a control panel within the vehicle to ensure a comfortable environment. The required temperature for the power battery is set according to its optimal operating temperature range. Power batteries perform best within a certain temperature range (typically 20°C-30°C). Temperatures that are too low or too high will affect battery performance and lifespan. Therefore, the required temperature for the battery cooling system is to ensure the power battery operates within its optimal operating temperature range.

[0064] In some embodiments of this application, the cooling assembly includes a compressor, and the required parameters of the cooling assembly include the compressor speed. Determining the required parameters of the cooling assembly based on the real-time difference between the actual temperature of the evaporator and the target temperature includes: if the real-time difference is greater than a first preset temperature difference, determining that the compressor speed is increased; if the real-time difference is within a preset temperature difference range, determining that the compressor maintains its current speed, the preset temperature difference range being greater than or equal to a second preset temperature difference and less than or equal to the first preset temperature difference; if the real-time difference is less than the second preset temperature difference, determining that the compressor speed is decreased.

[0065] In some embodiments of this application, the cooling component further includes a fan, and the required parameters of the cooling component also include the fan speed. Determining the required parameters of the cooling component based on the real-time difference between the actual temperature of the evaporator and the target temperature also includes: if the compressor speed is continuously reduced until it is reduced to the minimum speed, and the real-time difference is still not within the preset temperature difference range, the fan speed is reduced by a first preset value.

[0066] In some embodiments of this application, determining the required parameters of the cooling component based on the real-time difference between the actual temperature of the evaporator and the target temperature further includes: if the fan speed is reduced by a first preset value and the real-time difference is still not within the preset temperature difference range after a preset time interval, determining that the fan speed is reduced by the first preset value again.

[0067] In some embodiments of this application, determining the required parameters of the cooling component based on the real-time difference between the actual temperature of the evaporator and the target temperature further includes: if the real-time difference is within a preset temperature difference range, determining that the fan maintains its current speed.

[0068] In some embodiments of this application, the cooling assembly further includes an active air intake grille, and the required parameters of the cooling assembly also include the opening degree of the active air intake grille; determining the required parameters of the cooling assembly based on the real-time difference between the actual temperature of the evaporator and the target temperature further includes: if the fan speed continues to decrease until it decreases to zero, and the real-time difference is still not within the preset temperature difference range, determining that the opening degree of the active air intake grille is reduced by a second preset value.

[0069] In some embodiments of this application, determining the required parameters of the cooling component based on the real-time difference between the actual temperature of the evaporator and the target temperature further includes: if the real-time difference is still not within the preset temperature difference range after the opening of the active air intake grille is reduced by a second preset value, determining that the opening of the active air intake grille is reduced by a second preset value again.

[0070] In some embodiments of this application, determining the required parameters of the cooling component based on the real-time difference between the actual temperature of the evaporator and the target temperature further includes: if the real-time difference is within a preset temperature difference range, determining that the active air intake grille maintains its current opening.

[0071] It should be noted that the method for determining the required parameters of the cooling components based on the difference between the actual temperature and the target temperature of the evaporator will be discussed later. Figure 3 The steps shown are described in detail, and will not be repeated here to avoid repetition.

[0072] Step S12: Control the cooling component according to the required parameters of the cooling component.

[0073] In some embodiments of this application, the electronic device 10 can control the compressor according to the compressor speed in the demand parameters, control the fan according to the fan speed in the demand parameters, and control the active air intake grille according to the opening degree of the active air intake grille in the demand parameters.

[0074] In the anti-frost control method of the cooling system described in the above embodiment, the first step is to detect whether there is a risk of frost formation in the cooling system based on the environmental parameters of vehicle 1 and the operating parameters of the cooling system. If there is a risk of frost formation, the required parameters of the cooling components are determined based on the real-time difference between the actual temperature and the target temperature of the evaporator. Then, the cooling components are controlled according to these required parameters. Based on this, by real-time detection of the environmental parameters of vehicle 1 and the operating parameters of the cooling system, this application can accurately determine whether the cooling system faces a risk of frost formation. This allows the application to anticipate frost formation rather than taking measures after it occurs, thus preventing frost formation from the outset and ensuring the continuous and stable operation of the cooling system. By comprehensively considering multiple parameters rather than a single parameter, the accuracy of frost risk assessment is improved, and misjudgments are reduced. When a risk of frost formation is determined, the required parameters of the cooling components are determined based on the real-time difference between the actual temperature and the target temperature of the evaporator. This allows for precise and dynamic adjustment of the operating state of the cooling components based on the current temperature deviation of the evaporator, enabling the actual temperature of the evaporator to quickly and stably approach the target temperature, controlling the heat dissipation to achieve a supply-demand balance, effectively suppressing frost formation. The adjustment process is smooth and does not cause additional user discomfort. Because the calculation is based on real-time differential values, the cooling component's required parameters adaptively adjust to changes in the actual evaporator temperature, rather than using a fixed control strategy. This allows for better adaptation to different operating conditions and environmental changes, achieving a balanced state that can be maintained long-term. It maintains a good anti-frost effect and avoids frequent adjustments that could negatively impact the vehicle's NVH performance. Precise control of the cooling components ensures the cooling system is always in a relatively ideal operating state, preventing problems such as decreased cooling efficiency and increased energy consumption caused by frost. For example, frost affects the evaporator's heat exchange efficiency, leading to insufficient cooling capacity. It also reduces damage to cooling system components caused by frost, such as corrosion from melting frost droplets and additional wear caused by frost, thereby extending the service life of the cooling system components and reducing maintenance costs. For the vehicle's cooling system, stable cooling provides a comfortable riding environment for passengers, preventing unstable cooling and sudden temperature fluctuations caused by frost.

[0075] Please see Figure 3 This is a detailed flowchart of an anti-frost control method for a cooling system provided in an embodiment of this application.

[0076] This embodiment is a detailed explanation of step S11 in the foregoing embodiment, further illustrating how to determine the required parameters of the cooling component based on the difference between the actual temperature and the target temperature of the evaporator. Specifically, it includes the following steps:

[0077] Step S110: Obtain the real-time difference between the actual temperature and the target temperature of the evaporator.

[0078] Specifically, the electronic device 10 can monitor the actual temperature of the evaporator through a temperature sensor on the surface of the evaporator, and then determine the real-time difference between the actual temperature and the target temperature.

[0079] In some embodiments of this application, in new energy vehicles, the air conditioning cooling system and battery cooling system typically need to comprehensively consider the needs of the passenger compartment and the battery. The target temperature can be a comprehensive value that needs to be dynamically adjusted according to the actual needs of the passenger compartment and the battery. For example, when the battery's required temperature is high, priority is given to meeting the battery's cooling needs. In this case, the target temperature is adjusted based primarily on the required temperature of the power battery, with the passenger compartment's required temperature as a secondary consideration. Conversely, when the passenger compartment temperature is high, priority is given to meeting the passenger compartment's cooling needs. In this case, the target temperature is adjusted primarily on the required temperature of the passenger compartment, with the power battery's required temperature as a secondary consideration.

[0080] Step S111: If the real-time temperature difference is greater than the first preset temperature difference, determine that the compressor speed should be increased.

[0081] In some embodiments of this application, the first preset temperature difference can be 0.5°C. In other embodiments, the first preset temperature difference can be set according to actual needs.

[0082] In some embodiments of this application, if the real-time temperature difference is greater than the first preset temperature difference, it indicates that the actual temperature of the evaporator is much higher than the target temperature. At this time, the compressor needs to be loaded at normal speed to increase the cooling capacity and make the actual temperature of the evaporator drop to near the target temperature as soon as possible.

[0083] In some embodiments of this application, after determining that the compressor speed increases, the electronic device 10 controls the compressor to load at a normal speed.

[0084] Step S112: If the real-time difference is within the preset temperature difference range, determine that the compressor maintains the current speed.

[0085] In some embodiments of this application, the preset temperature difference range is greater than or equal to the second preset temperature difference and less than or equal to the first preset temperature difference.

[0086] In some embodiments of this application, the second preset temperature difference can be -0.5°C. In other embodiments, the second preset temperature difference can be set according to actual needs.

[0087] In some embodiments of this application, if the real-time difference is within the preset temperature difference range, it indicates that the real-time difference between the actual temperature of the evaporator and the target temperature is within the allowable range. The compressor can maintain its current speed to keep the cooling system running stably.

[0088] Step S113: If the real-time difference is less than the second preset temperature difference, determine that the compressor speed should be reduced.

[0089] In some embodiments of this application, if the real-time temperature difference is less than the second preset temperature difference, it indicates that the actual temperature of the evaporator is much lower than the target temperature. In this case, the compressor needs to reduce its speed and reduce the cooling capacity.

[0090] In some embodiments of this application, if the real-time temperature difference is still not within the preset temperature difference range after controlling the compressor speed to decrease, the compressor speed is continuously controlled to decrease. Each time the speed is decreased, the real-time temperature difference is checked to see if it is within the preset temperature difference range. If the real-time temperature difference is detected to be within the preset temperature difference range during the compressor speed reduction process, it indicates that the real-time temperature difference between the actual temperature of the evaporator and the target temperature is within the allowable range. It is determined that the compressor should maintain its current speed to keep the cooling system running stably.

[0091] Step S114: If the compressor speed continues to decrease until it reaches the lowest speed, and the real-time difference is still not within the preset temperature difference range, determine that the fan speed is reduced by a first preset value.

[0092] In some embodiments of this application, if the compressor continues to reduce its speed until it reaches the lowest speed, and the real-time difference is still not within the preset temperature difference range, it indicates that the current air intake on the condenser side is large and the cooling capacity is greater than the heat load. At this time, it is necessary to further reduce the fan speed, and then determine the fan speed reduction to a first preset value. For example, the first preset value can be 10% of the current fan speed, thereby reducing the cooling air volume of the condenser, thereby reducing the heat dissipation capacity of the condenser, and balancing the supply and demand of cooling capacity in the cooling system.

[0093] Step S115: If it is determined that the fan speed is reduced by a first preset value, and after a preset time interval, the real-time difference is still not within the preset temperature difference range, then it is determined that the fan speed is reduced by the first preset value again.

[0094] In some embodiments of this application, the preset duration may be 120 seconds.

[0095] In some embodiments of this application, if it is determined that the fan speed is reduced by a first preset value, and after a preset time interval, the real-time difference is still not within the preset temperature difference range, it indicates that the air intake on the condenser side is still relatively large, and the cooling capacity is still greater than the heat load. At this time, it is necessary to further reduce the fan speed, and then determine that the fan speed is reduced by the first preset value again.

[0096] In some embodiments of this application, the anti-frost control method for the cooling system further includes: if the real-time temperature difference is within a preset temperature difference range, determining that the fan maintains its current speed. If the real-time temperature difference is within the preset temperature difference range, it indicates that the real-time difference between the actual temperature of the evaporator and the target temperature is within the allowable range. Determining that the fan maintains its current speed can keep the cooling system running stably.

[0097] In some embodiments of this application, if the real-time temperature difference is still not within the preset temperature difference range, the fan speed is continuously reduced by a first preset value. Each time the fan speed is reduced, the real-time temperature difference is checked to see if it is within the preset temperature difference range. If the real-time temperature difference is detected to be within the preset temperature difference range during the fan speed reduction process, it indicates that the real-time temperature difference between the actual temperature of the evaporator and the target temperature is within the allowable range. By maintaining the current fan speed, the cooling system can be kept running stably.

[0098] Step S116: If the fan speed continues to decrease until it drops to zero, and the real-time difference is still not within the preset temperature difference range, determine that the opening of the active air intake grille is reduced by a second preset value.

[0099] In some embodiments of this application, if it is determined that the fan speed is reduced and the real-time difference is still not within the preset temperature difference range after the fan speed is reduced to zero, it indicates that the current air intake volume on the condenser side is still relatively large and the cooling capacity is greater than the heat load. At this time, it is necessary to further reduce the opening of the active air intake grille, and then determine the opening of the active air intake grille to be reduced by a second preset value, for example, the second preset value can be 5°, thereby reducing the cooling air volume of the condenser, thereby reducing the heat dissipation capacity of the condenser, so as to balance the supply and demand of cooling capacity of the cooling system.

[0100] Step S117: If it is determined that after the opening of the active air intake grille is reduced by the second preset value, and after a preset time interval, the real-time difference is still not within the preset temperature difference range, it is determined that the opening of the active air intake grille is reduced by the second preset value again.

[0101] In some embodiments of this application, the preset duration may be 120 seconds.

[0102] In some embodiments of this application, if it is determined that the opening of the active air intake grille is reduced by a second preset value, and after a preset time interval, the real-time difference is still not within the preset temperature difference range, it indicates that the air intake volume on the condenser side is still relatively large and the cooling capacity is still greater than the heat load. At this time, it is necessary to further reduce the opening of the active air intake grille, and then determine that the opening of the active air intake grille is reduced by a second preset value again.

[0103] Step S118: If the real-time difference is within the preset temperature difference range, determine that the active air intake grille maintains its current opening.

[0104] In some embodiments of this application, if the real-time difference is within the preset temperature difference range, it indicates that the real-time difference between the actual temperature of the evaporator and the target temperature is within the allowable range. By determining that the active air intake grille maintains its current opening, the cooling system can be kept running stably.

[0105] In some embodiments of this application, if the real-time temperature difference is still not within the preset temperature difference range, the opening of the active air intake grille is continuously reduced by a second preset value. Each time the rotational speed is reduced, the real-time temperature difference is checked to see if it is within the preset temperature difference range. If, during the reduction of the active air intake grille opening, the real-time temperature difference is detected to be within the preset temperature difference range, it indicates that the real-time temperature difference between the actual evaporator temperature and the target temperature is within the allowable range. Maintaining the current opening of the active air intake grille ensures stable operation of the cooling system.

[0106] In the above embodiments, the multi-level, adaptive anti-frost control method makes the actual temperature of the evaporator stably approach the target temperature, controls the heat dissipation to achieve a supply-demand balance, effectively suppresses frost, and the adjustment process is smooth, without causing additional adverse user perception. It can better adapt to different operating conditions and environmental changes, and the balanced state can be maintained for a long time, maintaining a good anti-frost effect, avoiding frequent adjustments that affect the NVH performance of the whole vehicle, improving the reliability and stability of the entire vehicle 1's cooling system, and providing users with a more comfortable and reliable driving experience.

[0107] Please see Figure 4 This is a schematic diagram of the functional modules of the anti-frost control device 100 of the cooling system provided in an embodiment of this application.

[0108] In this embodiment, based on the above... Figure 2 The present application also provides a cooling system anti-frost control device 100, which uses the same concept as the cooling system anti-frost control method described above, to perform the aforementioned cooling system anti-frost control method. For ease of explanation, the schematic diagram of the cooling system anti-frost control device 100 embodiment only shows the parts relevant to the embodiments of this application. Those skilled in the art will understand that the illustrated structure does not constitute a limitation on the cooling system anti-frost control device 100, and it may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0109] Specifically, the anti-frost control device 100 for the cooling system provided in this application embodiment includes a detection module 110, a determination module 120, and a control module 130. The detection module 110 is used to detect whether there is a risk of frost formation in the cooling system based on the environmental parameters of the vehicle 1 and the operating parameters of the cooling system. The determination module 120 is used to determine the required parameters of the cooling components based on the real-time difference between the actual temperature and the target temperature of the evaporator if there is a risk of frost formation in the cooling system. The control module 130 is used to control the cooling components according to the required parameters of the cooling components.

[0110] In the anti-frost control device 100 of the cooling system in the above embodiment, the system first detects whether there is a risk of frost formation in the cooling system based on the environmental parameters of the vehicle 1 and the operating parameters of the cooling system. If there is a risk of frost formation, the required parameters of the cooling components are determined based on the real-time difference between the actual temperature and the target temperature of the evaporator. Then, the cooling components are controlled according to the required parameters of the cooling components. Based on this, by real-time detection of the environmental parameters of the vehicle 1 and the operating parameters of the cooling system, this application can accurately determine whether the cooling system faces a risk of frost formation. This allows the application to anticipate the problem before frost formation occurs, rather than taking measures after frost formation occurs, thus preventing the occurrence of frost problems from the source and ensuring the continuous and stable operation of the cooling system. By comprehensively considering multiple parameters instead of a single parameter, the accuracy of frost risk judgment is improved and misjudgments are reduced. When a risk of frost formation is determined, the required parameters of the cooling components are determined based on the real-time difference between the actual temperature and the target temperature of the evaporator. This allows for precise and dynamic adjustment of the operating state of the cooling components based on the current temperature deviation of the evaporator, enabling the actual temperature of the evaporator to quickly and stably approach the target temperature, controlling the heat dissipation to achieve a supply-demand balance, effectively suppressing frost formation. The adjustment process is smooth and does not cause additional adverse user experience. Because the calculation is based on real-time differential values, the cooling component's required parameters adaptively adjust to changes in the actual evaporator temperature, rather than using a fixed control strategy. This allows for better adaptation to different operating conditions and environmental changes, achieving a balanced state that can be maintained long-term. It maintains a good anti-frost effect and avoids frequent adjustments that could negatively impact the vehicle's NVH performance. Precise control of the cooling components ensures the cooling system is always in a relatively ideal operating state, preventing problems such as decreased cooling efficiency and increased energy consumption caused by frost. For example, frost affects the evaporator's heat exchange efficiency, leading to insufficient cooling capacity. It also reduces damage to cooling system components caused by frost, such as corrosion from melting frost droplets and additional wear caused by frost, thereby extending the service life of the cooling system components and reducing maintenance costs. For the vehicle's cooling system, stable cooling provides a comfortable riding environment for passengers, preventing unstable cooling and sudden temperature fluctuations caused by frost.

[0111] Please see Figure 5This is a schematic diagram of the structure of an electronic device 10 provided in an embodiment of this application.

[0112] In some embodiments of this application, the electronic device 10 includes, but is not limited to, a memory 11, a processor 12, and a computer program stored in the memory 11 and executable on the processor 12, such as an anti-frost control program for a cooling system. When the computer program is executed by the processor, it implements the anti-frost control method for a cooling system as described in the above embodiments.

[0113] Figure 5 Only the electronic device 10 with memory 11 and processor 12 is shown. It will be understood by those skilled in the art that... Figure 5 The structure shown does not constitute a limitation on the electronic device 10, and may include fewer or more components than shown, or combine certain components, or have different component arrangements.

[0114] The memory 11 in the electronic device 10 stores multiple computer-readable instructions to implement a method for preventing frost formation in a cooling system. The processor 12 can execute multiple instructions to: detect whether there is a risk of frost formation in the cooling system based on the environmental parameters of the vehicle 1 and the operating parameters of the cooling system; if there is a risk of frost formation in the cooling system, determine the required parameters of the cooling components based on the real-time difference between the actual temperature and the target temperature of the evaporator; and control the cooling components based on the required parameters of the cooling components.

[0115] Specifically, the processor 12's implementation method for the above instructions can be found in [reference needed]. Figure 2 The descriptions of the relevant steps in the corresponding embodiments are not repeated here.

[0116] Those skilled in the art will understand that the schematic diagram is merely an example of the electronic device 10 and does not constitute a limitation on the electronic device 10. The electronic device 10 can be a bus topology or a star topology. The electronic device 10 may also include more or fewer other hardware or software than shown in the diagram, or different component arrangements. For example, the electronic device 10 may also include input / output devices, network access devices, etc.

[0117] It should be noted that electronic device 10 is only an example. Other existing or future electronic products that are suitable for this application should also be included within the scope of protection of this application and are incorporated herein by reference.

[0118] The memory 11 includes at least one type of computer-readable storage medium, which can be non-volatile or volatile. Computer-readable storage media include flash memory, portable hard drives, multimedia cards, card-type memories (e.g., SD memory, DX memory, etc.), magnetic memory, magnetic disks, optical disks, etc. In some embodiments, the memory 11 can be an internal storage unit of the electronic device 10, such as a portable hard drive of the electronic device 10. In other embodiments, the memory 11 can also be an external storage device of the electronic device 10, such as a plug-in portable hard drive, smart media card (SMC), secure digital (SD) card, flash card, etc., equipped on the electronic device 10. The memory 11 can be used not only to store application software and various types of data installed on the electronic device 10, such as the code of an anti-frost control program for a cooling system, but also to temporarily store data that has been output or will be output.

[0119] In some embodiments, the processor 12 may be composed of integrated circuits, such as a single packaged integrated circuit or multiple integrated circuits with the same or different functions, including combinations of one or more central processing units (CPUs), microprocessors, digital processing chips, graphics processors, and various control chips. The processor 12 is the control unit of the electronic device 10, connecting various components of the electronic device 10 via various interfaces and lines. It executes programs or modules stored in the memory 11 (e.g., executing an anti-frost control program for a cooling system) and calls data stored in the memory 11 to perform various functions and process data in the electronic device 10.

[0120] Processor 12 executes the operating system of electronic device 10 and various installed applications. Processor 12 executes these applications to implement the steps in the various embodiments of the anti-frost control method for a cooling system described above, for example... Figure 2 The steps are shown.

[0121] For example, a computer program may be divided into one or more modules / units, one or more of which are stored in memory 11 and executed by processor 12 to complete this application. One or more modules / units may be a series of computer-readable instruction segments capable of performing a specific function, which describe the execution process of the computer program in electronic device 10. For example, the computer program may be divided into a detection module 110, a determination module 120, and a control module 130.

[0122] The integrated unit implemented as a software functional module described above can be stored in a computer-readable storage medium. This software functional module, stored in a storage medium, includes several instructions to cause a computer device (which may be a personal computer, computer equipment, or network device, etc.) or processor to execute a portion of an anti-frost control method for a cooling system according to various embodiments of this application.

[0123] If the modules / units integrated in the electronic device 10 are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, all or part of the processes in the methods of the above embodiments can also be implemented by a computer program instructing related hardware devices. The computer program can be stored in a computer-readable storage medium, and when executed by the processor 12, it can implement the steps of the various method embodiments described above.

[0124] Computer programs include computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. Computer-readable media can include: any entity or device capable of carrying computer program code, recording media, USB flash drives, portable hard drives, magnetic disks, optical disks, computer memory, read-only memory (ROM), random access memory, and other types of memory.

[0125] Furthermore, the computer-readable storage medium may primarily include a stored program area and a stored data area, wherein the stored program area may store the operating system, an application program required for at least one function, etc.; and the stored data area may store data created based on the use of blockchain nodes, etc.

[0126] The bus can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. This bus can be divided into address bus, data bus, control bus, etc. For ease of representation, in... Figure 5 The symbol is represented by only one arrow, but this does not mean that there is only one bus or one type of bus. The bus is configured to implement communication between memory 11 and at least one processor 12, etc.

[0127] This application also provides a computer-readable storage medium (not shown), which stores computer-readable instructions. These computer-readable instructions are executed by a processor 12 in an electronic device 10 to implement an anti-frost control method for a cooling system according to any of the above embodiments.

[0128] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of modules is only a logical functional division, and other division methods may be used in actual implementation.

[0129] The modules described as separate components may or may not be physically separate. The components shown as modules may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0130] Furthermore, the functional modules in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or in the form of hardware plus software functional modules.

[0131] Furthermore, it is clear that the word "comprising" does not exclude other units or steps, and the singular does not exclude the plural. Multiple units or devices described in the specification may also be implemented by a single unit or device through software or hardware. Terms such as "first," "second," etc., are used to indicate names and do not indicate any specific order.

[0132] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this application without departing from the spirit and scope of the technical solutions of this application.

Claims

1. A method for preventing frost formation in a cooling system, characterized in that, Applied to vehicles, the cooling system includes an evaporator and cooling components, and the method includes: The system detects whether there is a risk of frost formation in the cooling system based on the vehicle's environmental parameters and the operating parameters of the cooling system. The environmental parameters include the vehicle's current ambient temperature and lighting conditions, and the operating parameters include the heat exchange capacity of the condenser and the heat load of the evaporator. If the ambient temperature is less than or equal to the preset temperature, the lighting condition is no light, and the heat exchange capacity of the condenser is greater than the heat load of the evaporator, it is determined that the cooling system has a risk of frosting, and the required parameters of the cooling components are determined based on the real-time difference between the actual temperature of the evaporator and the target temperature. The cooling component is controlled according to the required parameters of the cooling component.

2. The anti-frost control method for a cooling system as described in claim 1, characterized in that, The cooling assembly includes a compressor, and the required parameters of the cooling assembly include the compressor speed. Determining the required parameters of the cooling assembly based on the real-time difference between the actual temperature and the target temperature of the evaporator includes: If the real-time temperature difference is greater than the first preset temperature difference, the compressor speed is increased. If the real-time difference is within the preset temperature difference range, the compressor is determined to maintain the current speed. The preset temperature difference range is greater than or equal to the second preset temperature difference and less than or equal to the first preset temperature difference. If the real-time temperature difference is less than the second preset temperature difference, the compressor speed is reduced.

3. The anti-frost control method for the cooling system as described in claim 2, characterized in that, The cooling assembly also includes a fan, and the required parameters of the cooling assembly also include the fan speed. Determining the required parameters of the cooling assembly based on the real-time difference between the actual temperature and the target temperature of the evaporator further includes: If the compressor continues to reduce its speed until it reaches the lowest speed, and the real-time difference is still not within the preset temperature difference range, then the fan speed is determined to be reduced by a first preset value.

4. The anti-frost control method for a cooling system as described in claim 3, characterized in that, The step of determining the required parameters of the cooling component based on the real-time difference between the actual temperature and the target temperature of the evaporator also includes: If the fan speed decreases by the first preset value, and after a preset time interval, the real-time difference is still not within the preset temperature difference range, then it is determined that the fan speed decreases by the first preset value again.

5. The anti-frost control method for a cooling system as described in claim 4, characterized in that, The step of determining the required parameters of the cooling component based on the real-time difference between the actual temperature and the target temperature of the evaporator also includes: If the real-time difference is within the preset temperature difference range, the fan is determined to maintain the current speed.

6. The anti-frost control method for a cooling system as described in claim 4, characterized in that, The cooling assembly also includes an active air intake grille, and the required parameters of the cooling assembly also include the opening degree of the active air intake grille. Determining the required parameters of the cooling assembly based on the real-time difference between the actual temperature and the target temperature of the evaporator further includes: If the fan speed continues to decrease to zero and the real-time difference is still not within the preset temperature difference range, the opening of the active air intake grille is determined to be reduced by a second preset value.

7. The anti-frost control method for a cooling system as described in claim 6, characterized in that, The step of determining the required parameters of the cooling component based on the real-time difference between the actual temperature and the target temperature of the evaporator also includes: If the opening of the active air intake grille is reduced by the second preset value, and after a preset time interval, the real-time difference is still not within the preset temperature difference range, then it is determined that the opening of the active air intake grille is reduced by the second preset value again.

8. The anti-frost control method for a cooling system as described in claim 7, characterized in that, The step of determining the required parameters of the cooling component based on the real-time difference between the actual temperature and the target temperature of the evaporator also includes: If the real-time difference is within the preset temperature difference range, the active air intake grille is determined to maintain its current opening.

9. A frost prevention control device for a cooling system, characterized in that, A cooling system for vehicles, the cooling system including an evaporator and cooling components, the device comprising: The detection module is used to detect whether there is a risk of frost formation in the cooling system based on the environmental parameters of the vehicle and the operating parameters of the cooling system. The environmental parameters include the current ambient temperature and light conditions of the vehicle, and the operating parameters include the heat exchange capacity of the condenser and the heat load of the evaporator. The determination module is used to determine that if the ambient temperature is less than or equal to a preset temperature, the lighting condition is no light, and the heat exchange capacity of the condenser is greater than the heat load of the evaporator, the cooling system is at risk of frosting, and the required parameters of the cooling components are determined based on the real-time difference between the actual temperature of the evaporator and the target temperature. The control module is used to control the cooling component according to the required parameters of the cooling component.

10. An electronic device, characterized in that, The electronic device includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program, when executed by the processor, implements the anti-frost control method for the cooling system as described in any one of claims 1 to 8.

11. A vehicle, characterized in that, The vehicle includes the electronic equipment and cooling system as described in claim 10, wherein the cooling system is communicatively connected to the electronic equipment.

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